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- Achille Public Schools, Achille, Bryan County
- Ada Public Schools, Ada, Pontotoc County
- Adair Public Schools, Adair, Mayes County
- Afton Public Schools, Afton, Ottawa County
- Agra Public Schools, Agra, Lincoln County
- Albion Public School, Albion, Pushmataha County
- Alex Public Schools, Alex, Grady County
- Aline-Cleo Public Schools, Aline, Major County
- Allen Public Schools, Allen, Pontotoc County
- Allen-Bowden Public School, Tulsa, Creek County
- Altus Public Schools, Altus, Jackson County
- Alva Public Schools, Alva, Woods County
- Amber-Pocasset Public Schools, Amber, Grady County
- Anadarko Public Schools, Anadarko, Caddo County
- Anderson Public School, Sand Springs, Osage County
- Arapaho Public Schools, Arapaho, Custer County
- Ardmore City Schools, Ardmore, Carter County
- Arkoma Public Schools, Arkoma, Le Flore County
- Arnett Public Schools, Arnett, Ellis County
- Asher Public Schools, Asher, Pottawatomie County
- Atoka Public Schools, Atoka, Atoka County
- Autry Technology Center
- Avant Public School, Avant, Osage County
Read more about this topic: List Of School Districts In Oklahoma